package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.service.WebSocketServer;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private WebSocketServer webSocketServer;

    /*@Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;*/

    //用户下单
    @Override
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //先创建订单表对象
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        Long userId = BaseContext.getCurrentId();

        //查看地址簿的部分数据并复制到orders
        AddressBook addressBook = addressBookMapper.addressById(orders.getAddressBookId());
        //如果地址簿为空则不能下单，抛出异常
        if (addressBook==null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查用户收货地址是否超出配送范围
        //checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        BeanUtils.copyProperties(addressBook,orders);
        orders.setAddress(addressBook.getProvinceName()+addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        //补充其他没有值的字段
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(System.currentTimeMillis())+userId);
        orders.setStatus(orders.PENDING_PAYMENT);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(orders.UN_PAID);
        orderMapper.insert(orders);

        //查询当前用户提交的购物车信息
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> cartList = shoppingCartMapper.checkShoppingCart(shoppingCart);
        //如果购物车为空则不能下单，抛出异常
        if (cartList==null && cartList.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        for (ShoppingCart cart : cartList) {
            //再创建订单细分表对象
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orders.getId());
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetailMapper.insert(orderDetail);
        }

        //提交完成，清空购物车
        shoppingCartMapper.cleanShoppingCart(shoppingCart);

        return new OrderSubmitVO(orders.getId(),orders.getNumber(),orders.getAmount(),orders.getOrderTime());
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //向客户端浏览器推送消息
        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号:"+outTradeNo);
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    //历史订单查询
    @Override
    public PageResult historyOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.historyOrders(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                List<OrderDetail> orderDetailList = orderDetailMapper.getDetailByOrderId(orders.getId());
                OrderVO orderVO = new OrderVO();
                orderVO.setOrderDetailList(orderDetailList);
                BeanUtils.copyProperties(orders,orderVO);
                list.add(orderVO);
            }
        }

        return new PageResult(page.getTotal(),list);
    }

    //历史订单详情页
    @Override
    @Transactional
    public OrderVO orderInformation(Long id) {
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.getDetailByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    //取消订单
    @Override
    public void cancelOrder(OrdersCancelDTO ordersRejectionDTO) {
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersRejectionDTO,orders);
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    //再来一单
    @Override
    @Transactional
    public void repetitionOrder(Long id) {
        List<OrderDetail> orderDetailList = orderDetailMapper.getDetailByOrderId(id);
        for (OrderDetail orderDetail : orderDetailList) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail,shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCartMapper.addShoppingCart(shoppingCart);
        }
    }

    //催单
    @Override
    public void reminderOrder(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //向客户端发送消息
        Map map = new HashMap<>();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号:"+orders.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    //各个订单状态搜索
    @Override
    @Transactional
    public OrderStatisticsVO orderStatistics() {
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(orderMapper.orderStatistics(Orders.TO_BE_CONFIRMED));
        orderStatisticsVO.setConfirmed(orderMapper.orderStatistics(Orders.CONFIRMED));
        orderStatisticsVO.setDeliveryInProgress(orderMapper.orderStatistics(Orders.DELIVERY_IN_PROGRESS));
        return orderStatisticsVO;
    }

    //接单
    @Override
    public void confirmOrder(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = new Orders();
        orders.setId(ordersConfirmDTO.getId());
        orders.setStatus(Orders.CONFIRMED);
        orderMapper.update(orders);
    }

    //拒单
    @Override
    @Transactional
    public void rejectionOrder(OrdersRejectionDTO ordersRejectionDTO) throws Exception{
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        /*//支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }*/

        Orders orders = new Orders();
        orders.setId(ordersRejectionDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    //派送订单
    @Override
    public void deliveryOrder(Long id) {
        Orders orders = new Orders();
        orders.setId(id);
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    //完成订单
    @Override
    public void completeOrder(Long id) {
        Orders orders = new Orders();
        orders.setId(id);
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }

    //查询订单详情
    @Override
    public OrderVO checkOrderById(Long id) {
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> detailByOrderId = orderDetailMapper.getDetailByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(detailByOrderId);
        return orderVO;
    }



    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    /*private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }*/
}
